Sounds like they just pushed it too far with Feinstein with anonymice attacks; my bold:

Senator’s Simmering Battle With C.I.A. Over Detentions Report
By Jonathan Weisman and Mark Mazzetti, New York Times, March 12/13, 2014

[....]Mark M. Lowenthal, who, like Mr. Brennan, was a senior C.I.A. official at the beginning of that administration, said Wednesday that Mr. Brennan should long ago have agreed to let the committee release parts of the 6,300-page report it has produced, though the C.I.A. says it contains many inaccuracies. Mr. Brennan, he said, could have agreed to the release of a redacted version of the executive summary and the C.I.A.’s response.

“It would have been a two-day story at best,” Mr. Lowenthal said. “Now, it’s totally out of hand.”

In the end, Mr. Lowenthal said, the C.I.A. director “probably felt he could not give credence to the Senate report and keep his building’s loyalty.” [....]

On Jan. 15, Mr. Brennan requested an emergency meeting with her and the intelligence committee’s ranking Republican, Senator Saxby Chambliss of Georgia, at which he surprised them by saying that C.I.A. staff members had searched the computer network set up to allow the intelligence committee staff members to review documents on the C.I.A.’s detention and interrogation programs for the report.

Then, Ms. Feinstein was infuriated when she learned last month that the C.I.A.’s acting general counsel, Robert Eatinger, had made a criminal referral to the Justice Department, charging that committee staff members might have broken the law by gaining unauthorized access to C.I.A. computers and removing documents from the C.I.A. facility in Northern Virginia where they had been examining them for their report.

Still, she admonished her colleagues to stay quiet. She even had a tense exchange last week on the Senate floor with Senator Mark Udall, Democrat of Colorado, after Mr. Udall released a letter he had written to Mr. Obama that referred to an “unprecedented action taken by the C.I.A. against the committee.”

What ultimately pushed Ms. Feinstein to make her accusations public, according to congressional officials, were news media reports at the end of last week that contained anonymous accusations against the committee’s staff [....]